I don't know why, but at 90% of the sites I detect, I will find at least one key. I'll have to take a pic of all the keys I have one of these days and post it.
Hey, anything better then nails, old aluminum cans & foil is a thrill. Considering what I find on my acre, the 1966 brass dogtag that I found this morning was enough to come inside victorious
I got a key to room 14 at the school that I hunt last week (turned it in), & I found a key to our outside laundry room under the clothesline (which was nice, cuz we didn't get a key to it when we bought the place).